com.amazonaws.services.dynamodbv2.model.ReturnValue Java Examples

The following examples show how to use com.amazonaws.services.dynamodbv2.model.ReturnValue. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: LowLevelItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

6 votes

private static void updateAddNewAttribute() {
    try {
        HashMap<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        key.put("Id", new AttributeValue().withN("121"));

        Map<String, AttributeValue> expressionAttributeValues = new HashMap<String, AttributeValue>();
        expressionAttributeValues.put(":val1", new AttributeValue().withS("Some value"));

        ReturnValue returnValues = ReturnValue.ALL_NEW;

        UpdateItemRequest updateItemRequest = new UpdateItemRequest().withTableName(tableName).withKey(key)
            .withUpdateExpression("set NewAttribute = :val1")
            .withExpressionAttributeValues(expressionAttributeValues).withReturnValues(returnValues);

        UpdateItemResult result = client.updateItem(updateItemRequest);

        // Check the response.
        System.out.println("Printing item after adding new attribute...");
        printItem(result.getAttributes());

    }
    catch (AmazonServiceException ase) {
        System.err.println("Failed to add new attribute in " + tableName);
        System.err.println(ase.getMessage());
    }
}

Example #2

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void deleteItemAllOldNotExists() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    
    Map<String, AttributeValue> result1 = t1.deleteItem(new DeleteItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key1)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, key1, t1.getId(), true, false);
    assertNull(result1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, false);
}

Example #3

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void updateItemAllNewOverwrite() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(item0);
    item1.put("asdf", new AttributeValue("wef"));
    Map<String, AttributeValueUpdate> updates = new HashMap<String, AttributeValueUpdate>();
    updates.put("asdf", new AttributeValueUpdate().withAction(AttributeAction.PUT).withValue(new AttributeValue("wef")));
    
    Map<String, AttributeValue> result1 = t1.updateItem(new UpdateItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key0)
        .withAttributeUpdates(updates)
        .withReturnValues(ReturnValue.ALL_NEW)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item1, t1.getId(), false, true);
    assertEquals(result1, item1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item1, true);
}

Example #4

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void updateItemAllNewInsert() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(key1);
    item1.put("asdf", new AttributeValue("wef"));
    Map<String, AttributeValueUpdate> updates = new HashMap<String, AttributeValueUpdate>();
    updates.put("asdf", new AttributeValueUpdate().withAction(AttributeAction.PUT).withValue(new AttributeValue("wef")));
    
    Map<String, AttributeValue> result1 = t1.updateItem(new UpdateItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key1)
        .withAttributeUpdates(updates)
        .withReturnValues(ReturnValue.ALL_NEW)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    assertEquals(result1, item1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, item1, true);
}

Example #5

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void updateItemAllOldOverwrite() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(item0);
    item1.put("asdf", new AttributeValue("wef"));
    Map<String, AttributeValueUpdate> updates = new HashMap<String, AttributeValueUpdate>();
    updates.put("asdf", new AttributeValueUpdate().withAction(AttributeAction.PUT).withValue(new AttributeValue("wef")));
    
    Map<String, AttributeValue> result1 = t1.updateItem(new UpdateItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key0)
        .withAttributeUpdates(updates)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item1, t1.getId(), false, true);
    assertEquals(result1, item0);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item1, true);
}

Example #6

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void updateItemAllOldInsert() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(key1);
    item1.put("asdf", new AttributeValue("wef"));
    Map<String, AttributeValueUpdate> updates = new HashMap<String, AttributeValueUpdate>();
    updates.put("asdf", new AttributeValueUpdate().withAction(AttributeAction.PUT).withValue(new AttributeValue("wef")));
    
    Map<String, AttributeValue> result1 = t1.updateItem(new UpdateItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key1)
        .withAttributeUpdates(updates)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    assertNull(result1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, item1, true);
}

Example #7

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void putItemAllOldOverwrite() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(item0);
    item1.put("asdf", new AttributeValue("wef"));
    
    Map<String, AttributeValue> putResult1 = t1.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item1)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item1, t1.getId(), false, true);
    assertEquals(putResult1, item0);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item1, true);
}

Example #8

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void putItemAllOldInsert() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(key1);
    item1.put("asdf", new AttributeValue("wef"));
    
    Map<String, AttributeValue> putResult1 = t1.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item1)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    assertNull(putResult1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, item1, true);
}

Example #9

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void getThenUpdateExistingItem() {
    Transaction t1 = manager.newTransaction();
    
    Map<String, AttributeValue> item0a = new HashMap<String, AttributeValue>(item0);
    item0a.put("wef", new AttributeValue("new attr"));
    
    Map<String, AttributeValueUpdate> updates1 = new HashMap<String, AttributeValueUpdate>();
    updates1.put("wef", new AttributeValueUpdate(new AttributeValue("new attr"), AttributeAction.PUT));
    
    Map<String, AttributeValue> getResult = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key0)).getItem();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item0, t1.getId(), false, false);
    assertEquals(item0, getResult);
    
    Map<String, AttributeValue> updateResult = t1.updateItem(new UpdateItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key0)
            .withAttributeUpdates(updates1).withReturnValues(ReturnValue.ALL_NEW)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item0a, t1.getId(), false, true);
    assertEquals(item0a, updateResult);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item0a, true);
}

Example #10

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void getThenUpdateNewItem() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(key1);
    item1.put("asdf", new AttributeValue("didn't exist"));
    
    Map<String, AttributeValueUpdate> updates1 = new HashMap<String, AttributeValueUpdate>();
    updates1.put("asdf", new AttributeValueUpdate(new AttributeValue("didn't exist"), AttributeAction.PUT));
    
    Map<String, AttributeValue> getResult = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key1)).getItem();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, t1.getId(), true, false);
    assertNull(getResult);
    
    Map<String, AttributeValue> updateResult = t1.updateItem(new UpdateItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key1)
            .withAttributeUpdates(updates1).withReturnValues(ReturnValue.ALL_NEW)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    assertEquals(item1, updateResult);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, item1, true);
}

Example #11

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void getItemAfterPutItemOverwrite() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(item0);
    item1.put("asdf", new AttributeValue("wef"));
    
    Map<String, AttributeValue> getResult1 = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key0)).getItem();
    assertEquals(getResult1, item0);
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item0, t1.getId(), false, false);
    
    Map<String, AttributeValue> putResult1 = t1.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item1)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item1, t1.getId(), false, true);
    assertEquals(putResult1, item0);
    
    Map<String, AttributeValue> getResult2 = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key0)).getItem();
    assertEquals(getResult2, item1);
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item1, t1.getId(), false, true);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item1, true);
}

Example #12

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Test
public void getItemAfterPutItemInsert() {
    Transaction t1 = manager.newTransaction();
    Map<String, AttributeValue> key1 = newKey(INTEG_HASH_TABLE_NAME);
    Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>(key1);
    item1.put("asdf", new AttributeValue("wef"));
    
    Map<String, AttributeValue> getResult1 = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key1)).getItem();
    assertNull(getResult1);
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, t1.getId(), true, false);
    
    Map<String, AttributeValue> putResult1 = t1.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item1)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    assertNull(putResult1);
    
    Map<String, AttributeValue> getResult2 = t1.getItem(new GetItemRequest().withTableName(INTEG_HASH_TABLE_NAME).withKey(key1)).getItem();
    assertEquals(getResult2, item1);
    assertItemLocked(INTEG_HASH_TABLE_NAME, key1, item1, t1.getId(), true, true);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key1, item1, true);
}

Example #13

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Before
public void setup() {
    dynamodb.reset();
    Transaction t = manager.newTransaction();
    key0 = newKey(INTEG_HASH_TABLE_NAME);
    item0 = new HashMap<String, AttributeValue>(key0);
    item0.put("s_someattr", new AttributeValue("val"));
    item0.put("ss_otherattr", new AttributeValue().withSS("one", "two"));
    Map<String, AttributeValue> putResult = t.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item0)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertNull(putResult);
    t.commit();
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item0, true);
}

Example #14

Source File: MapperTransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

6 votes

@Before
public void setup() {
    Transaction t = manager.newTransaction();
    hashItem0 = new ExampleHashKeyItem();
    hashItem0.setId(UUID.randomUUID().toString());
    hashItem0.setSomething("val");
    hashItem0.setSomeSet(new HashSet<String>(Arrays.asList("one", "two")));
    t.save(hashItem0);
    key0 = newKey(INTEG_HASH_TABLE_NAME);
    item0 = new HashMap<String, AttributeValue>(key0);
    item0.put("s_someattr", new AttributeValue("val"));
    item0.put("ss_otherattr", new AttributeValue().withSS("one", "two"));
    Map<String, AttributeValue> putResult = t.putItem(new PutItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withItem(item0)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertNull(putResult);
    t.commit();
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, item0, true);
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, hashItem0.getKey(), hashItem0.getExpectedValues(), true);
}

Example #15

Source File: DocumentAPIItemCRUDExample.java From aws-dynamodb-examples with Apache License 2.0

6 votes

private static void deleteItem() {

        Table table = dynamoDB.getTable(tableName);

        try {

            DeleteItemSpec deleteItemSpec = new DeleteItemSpec()
            .withPrimaryKey("Id", 120)
            .withConditionExpression("#ip = :val")
            .withNameMap(new NameMap()
                .with("#ip", "InPublication"))
            .withValueMap(new ValueMap()
            .withBoolean(":val", false))
            .withReturnValues(ReturnValue.ALL_OLD);

            DeleteItemOutcome outcome = table.deleteItem(deleteItemSpec);

            // Check the response.
            System.out.println("Printing item that was deleted...");
            System.out.println(outcome.getItem().toJSONPretty());

        } catch (Exception e) {
            System.err.println("Error deleting item in " + tableName);
            System.err.println(e.getMessage());
        }
    }

Example #16

Source File: DynamoDBCertRecordStoreConnection.java From athenz with Apache License 2.0

6 votes

private List<X509CertRecord> updateLastNotified(String lastNotifiedServer, long lastNotifiedTime, List<Item> items) {
    long yesterday = lastNotifiedTime - TimeUnit.DAYS.toMillis(1);

    List<X509CertRecord> updatedRecords = new ArrayList<>();
    for (Item item : items) {
        // For each item, update lastNotifiedTime and lastNotifiedServer (unless they were already updated)
        UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey(KEY_PRIMARY, item.getString(KEY_PRIMARY))
                .withReturnValues(ReturnValue.ALL_NEW)
                .withUpdateExpression("set lastNotifiedTime = :lastNotifiedTimeVal, lastNotifiedServer = :lastNotifiedServerVal")
                .withConditionExpression("attribute_not_exists(lastNotifiedTime) OR lastNotifiedTime < :v_yesterday")
                .withValueMap(new ValueMap()
                        .with(":lastNotifiedTimeVal", lastNotifiedTime)
                        .withNumber(":v_yesterday", yesterday)
                        .withString(":lastNotifiedServerVal", lastNotifiedServer));

        Item updatedItem = table.updateItem(updateItemSpec).getItem();

        if (isRecordUpdatedWithNotificationTimeAndServer(lastNotifiedServer, lastNotifiedTime, updatedItem)) {
            X509CertRecord x509CertRecord = itemToX509CertRecord(updatedItem);
            updatedRecords.add(x509CertRecord);
        }
    }

    return updatedRecords;
}

Example #17

Source File: DocumentAPIItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

6 votes

private static void updateMultipleAttributes() {

        Table table = dynamoDB.getTable(tableName);

        try {

            UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("Id", 120)
                .withUpdateExpression("add #a :val1 set #na=:val2")
                .withNameMap(new NameMap().with("#a", "Authors").with("#na", "NewAttribute"))
                .withValueMap(
                    new ValueMap().withStringSet(":val1", "Author YY", "Author ZZ").withString(":val2", "someValue"))
                .withReturnValues(ReturnValue.ALL_NEW);

            UpdateItemOutcome outcome = table.updateItem(updateItemSpec);

            // Check the response.
            System.out.println("Printing item after multiple attribute update...");
            System.out.println(outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Failed to update multiple attributes in " + tableName);
            System.err.println(e.getMessage());

        }
    }

Example #18

Source File: DocumentAPIItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

6 votes

private static void updateAddNewAttribute() {
    Table table = dynamoDB.getTable(tableName);

    try {

        UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("Id", 121)
            .withUpdateExpression("set #na = :val1").withNameMap(new NameMap().with("#na", "NewAttribute"))
            .withValueMap(new ValueMap().withString(":val1", "Some value")).withReturnValues(ReturnValue.ALL_NEW);

        UpdateItemOutcome outcome = table.updateItem(updateItemSpec);

        // Check the response.
        System.out.println("Printing item after adding new attribute...");
        System.out.println(outcome.getItem().toJSONPretty());

    }
    catch (Exception e) {
        System.err.println("Failed to add new attribute in " + tableName);
        System.err.println(e.getMessage());
    }
}

Example #19

Source File: DocumentAPIItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

6 votes

private static void updateExistingAttributeConditionally() {

        Table table = dynamoDB.getTable(tableName);

        try {

            // Specify the desired price (25.00) and also the condition (price =
            // 20.00)

            UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("Id", 120)
                .withReturnValues(ReturnValue.ALL_NEW).withUpdateExpression("set #p = :val1")
                .withConditionExpression("#p = :val2").withNameMap(new NameMap().with("#p", "Price"))
                .withValueMap(new ValueMap().withNumber(":val1", 25).withNumber(":val2", 20));

            UpdateItemOutcome outcome = table.updateItem(updateItemSpec);

            // Check the response.
            System.out.println("Printing item after conditional update to new attribute...");
            System.out.println(outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Error updating item in " + tableName);
            System.err.println(e.getMessage());
        }
    }

Example #20

Source File: DocumentAPIItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

6 votes

private static void deleteItem() {

        Table table = dynamoDB.getTable(tableName);

        try {

            DeleteItemSpec deleteItemSpec = new DeleteItemSpec().withPrimaryKey("Id", 120)
                .withConditionExpression("#ip = :val").withNameMap(new NameMap().with("#ip", "InPublication"))
                .withValueMap(new ValueMap().withBoolean(":val", false)).withReturnValues(ReturnValue.ALL_OLD);

            DeleteItemOutcome outcome = table.deleteItem(deleteItemSpec);

            // Check the response.
            System.out.println("Printing item that was deleted...");
            System.out.println(outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Error deleting item in " + tableName);
            System.err.println(e.getMessage());
        }
    }

Example #21

Source File: DynamoDBServiceImpl2.java From Serverless-Programming-Cookbook with MIT License

5 votes

@Override
public final Response putItem(final Request request) {

    if (request.isWaitForActive()) {
        try {
            TableUtils.waitUntilActive(this.dynamoDBClient, request.getTableName());
        } catch (InterruptedException e) {
            return new Response(null,
                    "Error while waiting for table to become active with API version V2: " + e.getMessage());
        }
    }

    Map<String, AttributeValue> attributeValueMap = new HashMap<>();

    attributeValueMap.put(request.getPartitionKey(), new AttributeValue(request.getPartitionKeyValue()));
    attributeValueMap.put(request.getSortKey(), new AttributeValue().withN(request.getSortKeyValue().toString()));

    if (request.getStringData() != null) {
        request.getStringData().forEach((k, v)
                -> attributeValueMap.put(k, new AttributeValue(v)));
    }

    if (request.getIntegerData() != null) {
        request.getIntegerData().forEach((k, v)
                -> attributeValueMap.put(k, new AttributeValue().withN(v.toString())));
    }

    final PutItemRequest putItemRequest = new PutItemRequest()
            .withTableName(request.getTableName())
            .withItem(attributeValueMap)
            .withReturnValues(ReturnValue.NONE);

    this.dynamoDBClient.putItem(putItemRequest);

    return new Response("Item added into " + request.getTableName() + " with API version V2.", null);
}

Example #22

Source File: LowLevelItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

private static void updateMultipleAttributes() {
    try {

        HashMap<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        key.put("Id", new AttributeValue().withN("120"));

        Map<String, AttributeValue> expressionAttributeValues = new HashMap<String, AttributeValue>();
        expressionAttributeValues.put(":val1", new AttributeValue().withSS("Author YY", "Author ZZ"));
        expressionAttributeValues.put(":val2", new AttributeValue().withS("someValue"));

        ReturnValue returnValues = ReturnValue.ALL_NEW;

        UpdateItemRequest updateItemRequest = new UpdateItemRequest().withTableName(tableName).withKey(key)
            .withUpdateExpression("add Authors :val1 set NewAttribute=:val2")
            .withExpressionAttributeValues(expressionAttributeValues).withReturnValues(returnValues);

        UpdateItemResult result = client.updateItem(updateItemRequest);

        // Check the response.
        System.out.println("Printing item after multiple attribute update...");
        printItem(result.getAttributes());

    }
    catch (AmazonServiceException ase) {
        System.err.println("Failed to update multiple attributes in " + tableName);
        System.out.println(ase.getMessage()); // DELETEME
        System.err.println("Failed to update multiple attributes in " + tableName); // DELETEME
    }
}

Example #23

Source File: LowLevelItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

private static void updateExistingAttributeConditionally() {
    try {

        HashMap<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        key.put("Id", new AttributeValue().withN("120"));

        // Specify the desired price (25.00) and also the condition (price =
        // 20.00)

        Map<String, AttributeValue> expressionAttributeValues = new HashMap<String, AttributeValue>();
        expressionAttributeValues.put(":val1", new AttributeValue().withN("25.00"));
        expressionAttributeValues.put(":val2", new AttributeValue().withN("20.00"));

        ReturnValue returnValues = ReturnValue.ALL_NEW;

        UpdateItemRequest updateItemRequest = new UpdateItemRequest().withTableName(tableName).withKey(key)
            .withUpdateExpression("set Price = :val1").withConditionExpression("Price = :val2")
            .withExpressionAttributeValues(expressionAttributeValues).withReturnValues(returnValues);

        UpdateItemResult result = client.updateItem(updateItemRequest);

        // Check the response.
        System.out.println("Printing item after conditional update to new attribute...");
        printItem(result.getAttributes());
    }
    catch (ConditionalCheckFailedException cse) {
        // Reload object and retry code.
        System.err.println("Conditional check failed in " + tableName);
    }
    catch (AmazonServiceException ase) {
        System.err.println("Error updating item in " + tableName);
    }
}

Example #24

Source File: LowLevelItemCRUDExample.java From aws-dynamodb-examples with Apache License 2.0

5 votes

private static void updateAddNewAttribute() {
    try {
        HashMap<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        key.put("Id", new AttributeValue().withN("121"));
     
        
        Map<String, AttributeValue> expressionAttributeValues = new HashMap<String, AttributeValue>();
        expressionAttributeValues.put(":val1", new AttributeValue().withS("Some value")); 
        
        ReturnValue returnValues = ReturnValue.ALL_NEW;
        
        UpdateItemRequest updateItemRequest = new UpdateItemRequest()
            .withTableName(tableName)
            .withKey(key)
            .withUpdateExpression("set NewAttribute = :val1")
            .withExpressionAttributeValues(expressionAttributeValues)
            .withReturnValues(returnValues);
        
        UpdateItemResult result = client.updateItem(updateItemRequest);
        
        // Check the response.
        System.out.println("Printing item after adding new attribute...");
        printItem(result.getAttributes());            
                        
    }   catch (AmazonServiceException ase) {
                System.err.println("Failed to add new attribute in " + tableName);
                System.err.println(ase.getMessage());
    }        
}

Example #25

Source File: LowLevelItemCRUDExample.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

private static void deleteItem() {
    try {

        HashMap<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        key.put("Id", new AttributeValue().withN("120"));

        Map<String, AttributeValue> expressionAttributeValues = new HashMap<String, AttributeValue>();
        expressionAttributeValues.put(":val", new AttributeValue().withBOOL(false));

        ReturnValue returnValues = ReturnValue.ALL_OLD;

        DeleteItemRequest deleteItemRequest = new DeleteItemRequest().withTableName(tableName).withKey(key)
            .withConditionExpression("InPublication = :val")
            .withExpressionAttributeValues(expressionAttributeValues).withReturnValues(returnValues);

        DeleteItemResult result = client.deleteItem(deleteItemRequest);

        // Check the response.
        System.out.println("Printing item that was deleted...");
        printItem(result.getAttributes());

    }
    catch (AmazonServiceException ase) {
        System.err.println("Failed to get item after deletion " + tableName);
    }

}

Example #26

Source File: MoviesItemOps05.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

public static void main(String[] args) throws Exception {

        AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard()
            .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2"))
            .build();

        DynamoDB dynamoDB = new DynamoDB(client);

        Table table = dynamoDB.getTable("Movies");

        int year = 2015;
        String title = "The Big New Movie";

        UpdateItemSpec updateItemSpec = new UpdateItemSpec()
            .withPrimaryKey(new PrimaryKey("year", year, "title", title)).withUpdateExpression("remove info.actors[0]")
            .withConditionExpression("size(info.actors) > :num").withValueMap(new ValueMap().withNumber(":num", 3))
            .withReturnValues(ReturnValue.UPDATED_NEW);

        // Conditional update (we expect this to fail)
        try {
            System.out.println("Attempting a conditional update...");
            UpdateItemOutcome outcome = table.updateItem(updateItemSpec);
            System.out.println("UpdateItem succeeded:\n" + outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Unable to update item: " + year + " " + title);
            System.err.println(e.getMessage());
        }
    }

Example #27

Source File: MoviesItemOps04.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

public static void main(String[] args) throws Exception {

        AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard()
            .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2"))
            .build();

        DynamoDB dynamoDB = new DynamoDB(client);

        Table table = dynamoDB.getTable("Movies");

        int year = 2015;
        String title = "The Big New Movie";

        UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("year", year, "title", title)
            .withUpdateExpression("set info.rating = info.rating + :val")
            .withValueMap(new ValueMap().withNumber(":val", 1)).withReturnValues(ReturnValue.UPDATED_NEW);

        try {
            System.out.println("Incrementing an atomic counter...");
            UpdateItemOutcome outcome = table.updateItem(updateItemSpec);
            System.out.println("UpdateItem succeeded:\n" + outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Unable to update item: " + year + " " + title);
            System.err.println(e.getMessage());
        }
    }

Example #28

Source File: TransactionsIntegrationTest.java From dynamodb-transactions with Apache License 2.0

5 votes

@Test
public void deleteItemAllOldExists() {
    Transaction t1 = manager.newTransaction();
    
    Map<String, AttributeValue> result1 = t1.deleteItem(new DeleteItemRequest()
        .withTableName(INTEG_HASH_TABLE_NAME)
        .withKey(key0)
        .withReturnValues(ReturnValue.ALL_OLD)).getAttributes();
    assertItemLocked(INTEG_HASH_TABLE_NAME, key0, item0, t1.getId(), false, false);
    assertEquals(item0, result1);
    
    t1.commit();
    
    assertItemNotLocked(INTEG_HASH_TABLE_NAME, key0, false);
}

Example #29

Source File: TransactionExamples.java From dynamodb-transactions with Apache License 2.0

5 votes

/**
 * This example shows that reads can be performed in a transaction, and read locks can be upgraded to write locks. 
 */
public void readThenWrite() {
    print("\n*** readThenWrite() ***\n");
    
    Transaction t1 = txManager.newTransaction();
    
    // Perform a GetItem request on the transaction
    print("Reading Item1");
    Map<String, AttributeValue> key1 = new HashMap<String, AttributeValue>();
    key1.put(EXAMPLE_TABLE_HASH_KEY, new AttributeValue("Item1"));
    
    Map<String, AttributeValue> item1 = t1.getItem(new GetItemRequest()
        .withKey(key1)
        .withTableName(EXAMPLE_TABLE_NAME)).getItem();
    print("Item1: " + item1);
    
    // Now call UpdateItem to add a new attribute.
    // Notice that the library supports ReturnValues in writes
    print("Updating Item1");
    Map<String, AttributeValueUpdate> updates = new HashMap<String, AttributeValueUpdate>();
    updates.put("Color", new AttributeValueUpdate().withAction(AttributeAction.PUT).withValue(new AttributeValue("Green")));
    
    item1 = t1.updateItem(new UpdateItemRequest()
        .withKey(key1)
        .withTableName(EXAMPLE_TABLE_NAME)
        .withAttributeUpdates(updates)
        .withReturnValues(ReturnValue.ALL_NEW)).getAttributes();
    print("Item1 is now: " + item1);
    
    t1.commit();
    
    t1.delete();
}

Example #30

Source File: MoviesItemOps03.java From aws-doc-sdk-examples with Apache License 2.0

5 votes

public static void main(String[] args) throws Exception {

        AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard()
            .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2"))
            .build();

        DynamoDB dynamoDB = new DynamoDB(client);

        Table table = dynamoDB.getTable("Movies");

        int year = 2015;
        String title = "The Big New Movie";

        UpdateItemSpec updateItemSpec = new UpdateItemSpec().withPrimaryKey("year", year, "title", title)
            .withUpdateExpression("set info.rating = :r, info.plot=:p, info.actors=:a")
            .withValueMap(new ValueMap().withNumber(":r", 5.5).withString(":p", "Everything happens all at once.")
                .withList(":a", Arrays.asList("Larry", "Moe", "Curly")))
            .withReturnValues(ReturnValue.UPDATED_NEW);

        try {
            System.out.println("Updating the item...");
            UpdateItemOutcome outcome = table.updateItem(updateItemSpec);
            System.out.println("UpdateItem succeeded:\n" + outcome.getItem().toJSONPretty());

        }
        catch (Exception e) {
            System.err.println("Unable to update item: " + year + " " + title);
            System.err.println(e.getMessage());
        }
    }